Well-derrick.



PATENTED JUNE 16, 1903.

No. 731,109. Y

J. U. KNUPP. WELL DERRICK.

. eAifm'geys UNrT-sn STATES Patented June 16, 1903.

JACOB C. KNUPP, OF CHAFFEE, PENNSYLVANIA.

WELL- DERRlCK.

SPECIFICATION forming part of Letters Patent No. 731,109, dated June 16,1903.

Application filed April 18, 1903. Serial No. 153,281. (No model.)

T0 aZZ whom it may concern.-

Be it known that I, JAcoB C. KNUPP, a citizen of the United States,residingat Ohaffee, in the county of Elk and State of Pennsylvania, haveinvented a new and useful Well- Derrick, of which the following is aspecification.-

This invention relates to derricks employed more particularly indrilling oil-wells, gaswells, Artesian wells, and for similar purposes,and has for its object to simplify and improve devices of thischaracter, lighten and cheapen the construction, and increase thestrength without decreasing the efficiency; and the invention consistsin certain novel features of the construction, as ,hereinafter. shownand described, and specified in the claims. i

In the drawings illustrative of the invention, in which correspondingparts are denoted by like designating characters, Figure l is aperspective view of the device complete. Fig. 2 is a front view, andFig. 3 is a transverse sectional view, of the head of the derrick,illustrating the construction of this portion more fully.

The improved derrick comprises a base portion formed of spaced sidemembers 11, having extended ends 12, 13, 14, and and connected by acentral transverse member 16 and spaced transverse members .17 18, allthe parts being securely bolted together, so thatthey can be easilyseparated and put together again when required. The transverse members16, 17, and 18 will be utilized to support the floor of the derrick; butas the floor forms no part 'of the invention it is omitted, as itspresence wouldobscure some novel portions of the structure which it isdesired to illustrate. Rising from the ends of the central transversemember 16 are two main vertical members 19 20, tapering uni.- formlytoward their upper ends and converging inwardly and connected at pointsbelow their upper ends by transverse tie-bars 21 22, thus leaving theupper ends of the vertical members extending above the tie-bars, asshown. The main vertical members 1920 are supported by inclined bracemembers 23, 24, 25, and 26, connected at their lower ends to the basemembers 10.11 just outside the transverse members 17 18 and with theirupper ends scarfed and secured to the vertical members -19 2Ointermediately of their heights, as shown. Theinclined brace members andthe vertical members are further supported by horizontal tie-plates 2728 29,

' while the vertical members are also further supported by transversetie-bars 30, 31, and 32 and reversely-diagonal braces 33 34, as shown.Connecting the extended ends 12,13, 14, and 15 of the base members 10 11with the upper portions of the vertical members 19 are stay-rods 35, 36,37, and 38, each rod preferably with a turnbuckle or other means forstraining it longitudinally to secure the proper tension. By this simplemeans a very compact, strong, and light derrick is produced composed ofrelatively few parts and each part coacting to support and strengthenthe other parts and efiectually resisting all strains to which it may besubjected no matter from what direction theymay come.

The parts comprising the derrick are so distributed and the relativestrength so proportioned that no superfluous weight is employed. Hencethe resistance is uniformly distributed throughout, so that a veryeconomical structure is produced, which will efficiently resist all thestrains to which it is subjected and combining the minimum of strengthandlightness with the maximum of efficiency. The parts of the frameworkmay be of Wood or metal or partially of each and may be of any requiredsize or proportion.

Transversely disposed upon the tie-bars 21 22are spaced crown-blocks 3536, engaging the inner surfaces of the extended upper ends of the sidemembers 1920 and supported thereby from lateral movement and connectedby a pulley-shaft 37, upon which the cablepulley 38 is journaled betweenthe crownblocks, as shown. By this simple means the cable-pulley iseificiently supported and the crown blocks likewise supported and alllat-' eral movement prevented.

Having thus described the invention, what I claim is- 1. A derrickcomprising a base portion formed of spaced side members having extendedends and connected by a centrallydisposed transverse member, andtransverse members spaced from said central member,

main vertical members connected to said central member and convergingtoward their free ends and connected by transverse tie-bars, inclinedbrace members secured to said base side members and to said spacedtransverse members and likewise to said vertical members intermediatelyof their height, and stayrods between the extended ends of said basemembers and the upper ends of said vertical members, substantially asdescribed.

2. A derrick comprising a base portion formed of spaced side members andconnected by a centrally-disposed transverse member, and transversemembers spaced from said central member, main vertical members connectedto said central member and converging toward their free ends andconnected by transverse tie-bars, and uniformly tapering toward theirupper ends, and inclined brace members secured to said base side membersadjacent to said spaced transverse members and likewise to said verticalmembers intermediately of their heights, substantially as described.

3. A derrick comprising a laterally-extended base portion, vertical sidemembers spaced apart and rising from said base portion and convergingtoward their upper ends, transverse tie-bars connecting said sidemembers,

. below their upper ends, crown-blocks supported transversely of saidtie-bars between the upper ends of said side members and laterallysupported thereby, and a cable-pulley mounted for rotation between saidcrownblocks, substantially as described.

4. A derrick comprising a base portion formed of spaced side membersconnected by a central transverse member and spaced transverse members,main vertical members connected to said central member and convergingtoward their upper ends and connected by transverse tie-bars, spacedtransverse tie

